Ventilation system with removable primary display

ABSTRACT

The disclosure describes a novel approach for displaying information on a ventilator system. The disclosure describes a novel respiratory system including a removable primary display and system status display. Further, the disclosure describes a novel method for displaying ventilator information and a novel method for controlling a ventilator system.

RELATED APPLICATION

This application claims the benefit of U.S. Provisional Application No.61/266,731, filed Dec. 4, 2009, and entitled “Ventilation System StatusDisplay”, which application is hereby incorporated herein by reference.

INTRODUCTION

Many devices now use electronic graphical user interfaces (GUIs) as theprimary user interface means instead of panels with mechanical elementssuch as knobs, buttons, switches etc. These GUIs are typically presentedon a suitably-sized display (such as a flat panel display) inconjunction with a pointing or, as is increasingly common, atouch-sensitive display.

One drawback of such devices, however, is a reliance on the display forboth control of the primary function of the device and monitoring of theperformance of the device. This allows, under certain circumstances, fora failure of the display electronics that does not affect theperformance of the device to cause the operator of the device to beunable to determine if the device is still operational.

Another drawback of electronic GUIs is the power consumption thedisplays require. Large and high resolution displays and supportcircuitry often consume excessive amounts of power, making themunattractive for use with battery-powered devices.

Yet another drawback related to the power consumption issue is that inorder for an operator to interact with or obtain information from thedevice in any way, the electronic GUI must be powered on, even when theinformation needed is unrelated to the operation of the device. Forexample, a device may have a battery that can be charged from wall powerwhen the device is turned off. If the electronic GUI is the onlyinterface, then in order to simply determine the charge condition of thebattery, the device must be turned on in order to power the electronicGUI.

One way that has been used to address this problem is to providecombinations of limited function alpha numeric displays, lamps and LEDsin addition to the primary display to manage ancillary or statusinformation that should be provided to the operator. However, suchancillary user interface elements can not be reconfigured as they arebuilt into their devices. Therefore, if different operators want to seedifferent types of ancillary information, the only way to achieve thisis to create different physical housings for each set of ancillaryinformation desired by consumers.

SUMMARY

The disclosure describes a novel approach for displaying information ona ventilator system. The disclosure describes a novel respiratory systemincluding a removable primary display and system status display.Further, the disclosure describes a novel method for displayingventilator information and a novel method for controlling a ventilatorsystem.

In part, this disclosure describes a method for displaying ventilatorinformation. The method includes performing the following steps:

-   -   a) displaying a first set of status data on a system status        display;    -   b) determining that a primary display is at least one of turned        off, disabled, removed from a main ventilator housing, and        malfunctioning; and    -   c) after the determination step, displaying a second set of        status data on the system status display different from the        first set of status data.

Yet another aspect of this disclosure describes a ventilation systemthat includes: a main housing; a gas delivery system in the mainhousing; a ventilation control system in the main housing that controlsthe gas delivery system and monitors one or more of a patientphysiological parameter, operational parameters of the ventilationsystem and user-settable parameters; a primary display controller thatgenerates a graphical user interface and that receives user inputsthrough the graphical user interface and delivers commands to theventilation control system based on the inputs; a primary displayhousing removably attached to the main housing; a primary display in theprimary display housing that presents the graphical user interface; anda system status display incorporated into the main housing that receivesstatus data directly from the ventilation control system and displaysthe status data.

In yet another aspect, the disclosure describes a method for displayingventilator information. This method includes performing the followingsteps:

-   -   a) displaying a first set of status data on a system status        display;    -   b) determining that a ventilation system is receiving power only        from one or more batteries; and    -   c) after the power determination step, displaying a second set        of status data on the system status display different from the        first set of status data.

These and various other features as well as advantages whichcharacterize the systems and methods described herein will be apparentfrom a reading of the following detailed description and a review of theassociated drawings. Additional features are set forth in thedescription which follows, and in part will be apparent from thedescription, or may be learned by practice of the technology. Thebenefits and features of the technology will be realized and attained bythe structure particularly pointed out in the written description andclaims hereof as well as the appended drawings.

It is to be understood that both the foregoing general description andthe following detailed description are exemplary and explanatory and areintended to provide further explanation of the invention as claimed.

BRIEF DESCRIPTION OF THE DRAWINGS

The following drawing figures, which form a part of this application,are illustrative of embodiments systems and methods described below andare not meant to limit the scope of the invention in any manner, whichscope shall be based on the claims appended hereto.

FIG. 1 illustrates an embodiment of a ventilator system including aprimary removable display and a system status display.

FIG. 2 illustrates an embodiment of a ventilator system including aprimary removable display and a system status display.

FIG. 3 illustrates an embodiment of a screen shot of a system statusdisplay.

FIG. 4 illustrates an embodiment of a screen shot of a system statusdisplay.

FIG. 5 illustrates an embodiment of a screen shot of a system statusdisplay.

FIG. 6 illustrates an embodiment of a screen shot of a system statusdisplay.

FIG. 7 illustrates an embodiment of a screen shot of a system statusdisplay.

FIG. 8 illustrates an embodiment of a screen shot of a system statusdisplay.

FIG. 9 illustrates an embodiment of a ventilator display system.

FIG. 10 illustrates an embodiment of a method for displaying ventilatorinformation.

FIG. 11 illustrates an embodiment of a method for displaying ventilatorinformation.

FIG. 12 illustrates an embodiment of a method for displaying ventilatorinformation.

FIG. 13 illustrates an embodiment of a method for displaying ventilatorinformation.

FIG. 14 illustrates an embodiment of a method for controlling aventilator system.

DETAILED DESCRIPTION

This disclosure describes embodiments of a system status display for usein devices such as medical ventilators that have an electronic GUI on aprimary display device. The system status display (SSD) is a secondarydisplay that has a more limited functionality than the electronic GUI onthe primary display, and is provided primarily, if not solely, for thepurpose of providing system status information to the operator.

Although the technology introduced above and discussed in detail belowmay be implemented for a variety of devices (and not just medicaldevices), the present disclosure will discuss the implementation ofthese techniques in the context of a medical ventilator for use inproviding ventilation support to a human patient. The reader willunderstand that the technology described in the context of a medicalventilator for human patients could be adapted for use with othersystems such as ventilators for non-human patients, different types ofmedical devices and any devices that use an electronic GUI presented ona primary display.

Medical ventilators are used to provide mixed gases that can bedelivered in different modes of operation to a patient who may otherwisebe unable to breathe sufficiently. This could include assisting a weaklybreathing patient by reducing the work of breathing or by breathing fora patient that is unable to breathe. In modern medical facilities,pressurized air and oxygen sources are often available from walloutlets. Other, exotic gases such as helium, helium-oxygen mixtures(heliox), nitrogen and argon to name but a few, may also be useddepending on the therapy being administered.

Medical ventilators monitor the delivery of breathing gas to thepatient, may directly or indirectly monitor physiological parameters ofthe patient, and monitor the operation of the ventilator.

In the embodiments described herein, operators control the medicalinterface through an electronic GUI presented on a primary display,possibly in conjunction with one or more user input devices such as athumbwheel, mouse, keyboard, or selector. As described above, typicallysuch a primary display is a large display which may be provided withtouchscreen capability. The electronic GUI presented to the operator viathis display allows the operator to view patient data in differentforms, historical data, control the operation of the ventilator andchange the therapy being provided to the patient. In an embodiment,every ventilator operation that can be performed by the ventilator canbe accessed via the electronic GUI.

Because of the computing power necessary to drive such a primarydisplay, a separate GUI controller (which may alternatively be referredto as the primary display controller or graphics subsystem) is oftenused that is solely dedicated to running the primary display,interpreting user inputs received through the GUI, and passing thatinformation on to the main ventilator controller that controls theactual gas delivery operations of the ventilator and any subsystemswithin the ventilator. Another function is to perform the computationsand manipulations necessary to raw data provided by the main ventilatorcontroller or discreet ventilator subsystems and turn them into thegraphical presentations (waveforms, loops, monitored patient data,average values, etc.) shown on the GUI. For example, in an embodiment,the main ventilator controller monitors and outputs current parameters,which are then stored in memory to be accessed as needed by the GUIcontroller.

An example of one such subsystem is a battery control system. Typically,medical ventilators may be provided with one or more batteries to allowthe ventilator to remain in operation without interruption while apatient is being transported between locations or during power loss. Thebattery system may include a monitoring and recharging subsystem thatmonitors the charge state and performance of the battery or batteriesand keeps the batteries in a charged state.

Depending on the configuration of the ventilator other subsystems may beprovided such as modules associated with gas sources, e.g., that monitorthe amount of gas remaining in a storage bottle or which gas sources arecurrently in use or modules associated with power management such aswhether power is being delivered from a wall outlet or the batterysystem.

The SSD of the present disclosure is a secondary display that provideslimited status information to the operator. In an embodiment, the SSDmay not be interactive in any way, rather only providing statusinformation in a predetermined or preselected format. Alternatively,some limited interaction may be provided through which a limited set ofcommands may be provided directly to the main breath deliverycontroller.

The SSD may be completely independent of the primary display and the GUIcontroller. One benefit of this is that either the primary display orthe GUI controller could fail completely but the SSD would still providethe operator with information, obtained directly from the mainventilator controller, describing the performance of the ventilator.Another benefit of this architecture is that it allows the primarydisplay and, thus the GUI, to be powered down or even completely removedfrom the ventilator while continuing to provide the user status of gasdelivery to the patient and system status. Removal of the primarydisplay allows for easy transport of the ventilator (as primary displaysare often large and consume high amounts of power) without interruptingthe delivery of respiratory therapy to a patient. Having the SSDoperational when the primary display is powered down also has thebenefit of allowing an operator to determine the status of varioussubsystems without the need to power up/boot up the GUI controller orother non-essential systems.

In an embodiment, the SSD is a display located on the breathe deliveryhousing that is always powered on and displaying status information whenthe ventilator is provided with external power, e.g., when it is pluggedinto a wall socket. In one embodiment, the SSD is a small, low-powerdisplay such as an LCD display to reduce the power demand of the SSD.The SSD may or may not be always powered on when the ventilator is underbattery power. In an embodiment, when the ventilator is on battery powerthe SSD may power off and may be turned on using a separate SSD powerswitch (different from that controlling the primary display andelectronic GUI). The SSD or drive circuitry may be able to determinewhen the primary display is turned off or removed during ventilation(e.g., such as for transport to conserve battery life) and mayautomatically turn on and remain on in such circumstances.

In an embodiment, when the SSD is on, the SSD may be programmable by theoperator or manufacturer to meet local requirements or preferences.Likewise, the status data (that is data obtained from systems other thanthe GUI controller) displayed and the format of that display may also beuser selectable.

FIG. 1 illustrates an embodiment of a ventilator system 20 (alsoreferred to as ventilator 20) including a primary removable display 59,a system status display 51, a controller 50, and a pneumatic system 22(also referred to as a gas delivery system 22). The ventilator system 20further includes a main housing.

Ventilator 20 is connected to a human patient 24. Pneumatic system 22(also referred to as a gas delivery system 22) delivers breathing gasesto a patient 24 via the ventilation tubing system 26, which couplespatient 24 to the pneumatic system 22 via physical patient interface 28and ventilator circuit 30. The gas delivery system 22 is located in themain housing of ventilator 20. Ventilator circuit 30 could be a two-limbor one-limb circuit 30 for carrying gas mixture to and from the patient24. In a two-limb embodiment as shown, a wye fitting 36 may be providedas shown to couple the patient interface 28 to the inspiratory limb 32and the expiratory limb 34 of the circuit 30.

The present description contemplates that the patient interface 28 maybe invasive or non-invasive, and of any configuration suitable forestablishing a flow of breathing gas from the patient circuit 30 to anairway of the patient 24. Examples of suitable patient interface 28devices include a nasal mask, nasal/oral mask (which is shown in FIG.1), nasal prong, full-face mask, tracheal tube, endrotracheal tube,nasal pillow, etc.

Pneumatic system 22 may be configured in a variety of ways. In thepresent example, system 22 includes an expiratory module 40 coupled withan expiratory limb 34 and an inspiratory module 42 coupled with aninspiratory limb 32. The inspiratory limb 32 receives a gas mixture fromone or more gas sources controlled by one or more gas metering devices.The pneumatic system 22 may include a variety of other components,including other sources for pressurized air and/or oxygen, gas meteringdevices, accumulators, mixing modules, valves, sensors, tubing, filters,etc.

Controller 50 is operatively coupled with pneumatic system 22, signalmeasurement and acquisition systems, and an operator interface 52. Theoperator interface 52 may be provided to enable an operator to interactwith the ventilator 20 (e.g., change ventilator settings, selectoperational modes, view monitored parameters, etc.). Controller 50 mayinclude memory 54, one or more processors 56, storage 58, and/or othercomponents of the type commonly found in command and control computingdevices.

The memory 54 is non-transitory computer-readable storage media thatstores software that is executed by the processor 56 and which controlsthe operation of the ventilator 20. In an embodiment, the memory 54comprises one or more solid-state storage devices such as flash memorychips. In an alternative embodiment, the memory 54 may be mass storageconnected to the processor 56 through a mass storage controller (notshown) and a communications bus (not shown). Although the description ofnon-transitory computer-readable media contained herein refers to asolid-state storage, it should be appreciated by those skilled in theart that non-transitory computer-readable storage media can be anyavailable media that can be accessed by the processor 56. Non-transitorycomputer-readable storage media includes volatile and non-volatile,removable and non-removable media implemented in any method ortechnology for storage of information such as computer-readableinstructions, data structures, program modules or other data.Non-transitory computer-readable storage media includes, but is notlimited to, RAM, ROM, EPROM, EEPROM, flash memory, non-volative memory,or other solid state memory technology, CD-ROM, DVD, or other opticalstorage, magnetic cassettes, magnetic tape, magnetic disk storage orother magnetic storage devices, or any other medium which can be used tostore the desired information and which can be accessed by the processor56.

The controller 50 issues commands to pneumatic system 22 in order tocontrol the gas delivery provided to the patient 24 by the ventilator20. The specific commands may be based on inputs received from patient24, pneumatic system 22 and sensors, operator interface 52 and/or othercomponents of the ventilator 20.

In the depicted example, operator interface 52 includes a primarydisplay 59 that is touch-sensitive, enabling the primary display 59 toserve both as an input user interface and an output device. The primarydisplay 59 is removable from the ventilator system 20. The removal ofprimary display 59 provides for easy transport of the ventilator 20 (asprimary displays are often large and consume high amounts of power)without interrupting the delivery of respiratory therapy to a patient.The primary display 59 can display any type of ventilation information,such as sensor readings, parameters, commands, alarms, warnings, andsmart prompts (i.e., ventilator determined operator suggestions).

The primary display 59 is an electronic Graphical User Interface (GUI)that allows the operator to view patient data in different forms, viewhistorical data, control the operation of the ventilator, and to changethe therapy being provided to the patient. In an embodiment, everyventilator operation that can be performed by the ventilator 20 can beaccessed via the electronic GUI 59. In another embodiment, a portion ofthe ventilator operations that can be performed by the ventilator 20 canbe accessed via the electronic GUI of primary display 59.

In one embodiment, primary display 59 utilizes a separate GUI controller(not shown), which may alternatively be referred to as the primarydisplay controller or graphics subsystem. A separate GUI controller maybe utilized because the computing power necessary to drive primarydisplay 59 is often solely dedicated to running the primary display,interpreting user inputs received through the GUI, and passing thatinformation on to the main ventilator controller that controls theactual gas delivery operations of the ventilator and any subsystemswithin the ventilator.

Primary display 59 also performs the computations and manipulationsnecessary to convert raw data, provided by the main ventilatorcontroller or discreet ventilator subsystems, into the graphicalpresentations, such as waveforms, loops, monitored patient data, and/oraverage values for display on the GUI. This list is not limiting. Anysuitable type of graphical presentation for a primary display 59 may beutilized. In one embodiment, the raw data and the generated graphicalpresentations are stored in memory to be accessed as needed by the GUIcontroller of primary display 59.

In this embodiment, ventilator 20 includes a battery control system.Medical ventilators may be provided with one or more batteries to allowthe ventilator to remain in operation without interruption while apatient is being transported between locations or during power loss. Inthis embodiment, the ventilator 20 monitors the charge state andperformance of the battery or batteries and keeps the batteries in acharged state. In this embodiment, the primary display 59 and/or SSD 51is in communication with the battery control system and displays batteryinformation received from the battery control system, such as batteryuse, battery performance, and battery charge levels.

In an alternative embodiment, the primary display includes a primarydisplay battery control system that monitors the charge state andperformance of the battery or batteries in the ventilator system and/orin the primary display and keeps the batteries in a charged state. Inthis embodiment, the primary display 59 and/or SSD 51 is incommunication with the primary display battery control system anddisplays battery information received from the battery control system,such as battery use, battery performance, and battery charge levels.

Ventilator 20 further includes system status display (SSD) 51. The SSD51 is a secondary display that provides limited status information tothe operator. As shown in FIG. 1, SSD 51 is not interactive in any way.SSD 51 displays status information in a predetermined or preselectedformat. In alternative embodiments, the SSD 51 provides for limitedinteractions, such as a set of commands provided directly to thecontroller 50.

SSD 51 is completely independent of the GUI controller on the primarydisplay 59. Accordingly, if the primary display 59 with the GUIcontroller fails, is disconnected, removed from the ventilator 20,powered off, or malfunctions, the SSD 51 still provides the operatorwith ventilator and patient information obtained directly from thecontroller 50. SSD 51 allows an operator to determine the status ofvarious subsystems of ventilator 20 without having to power up/boot up,fix, or reattach primary display 59 with the GUI controller.

In one embodiment, SSD 51 is located on the housing of ventilator 20. Inan embodiment, SSD 51 displays status information and is always on whenthe ventilator is provided with battery power and/or external power(e.g., when it is plugged into a wall socket). In this embodiment, theSSD 51 is a small, low-power display, such as an LCD display. In analternative embodiment, SSD 51 is powered off unless an operator turnsthe SSD 51 on (with different power switch from that controlling theprimary display 59) when the ventilator is provided with battery powerand/or external power. In another embodiment, SSD 51 has drive circuitryto determine when the primary display is turned off, disabled, failingor removed from the ventilator (e.g., such as for transport to conservebattery life) and automatically turns on for a portion of time. In thisembodiment, SSD 51 may remain on. In another embodiment, SSD 51 remainson until the operator switches SSD 51 off, SSD 51 looses power, theprimary display 59 is turned on, is fixed, or is reattached, or anexternal power source is utilized.

In one embodiment, SSD 51 is programmable by the operator ormanufacturer to meet local requirements or preferences. Further, statusdata (that is obtained from systems other than the GUI controller of theprimary display 59) is displayed. In another embodiment, the format ofthe data displayed on the SSD 51 is selected by the operator ormanufacturer.

Referring to FIG. 2, an embodiment of a ventilation system 200 is shown.Ventilation system 200 includes a main housing 202. The main housingincludes a gas delivery system 204, a ventilation control system 206,and a system status display 208. The ventilation control system 206controls the gas delivery system and monitors one or more of a patientphysiological parameter, operational parameters of the ventilationsystem and user-settable parameters. In one embodiment, the ventilationcontrol system 206 is located in the main housing 202. In an alternativeembodiment, the ventilation control system 206 is located in a separatecomponent independent of the main housing.

The system status display 208 receives status data directly from theventilation control system and displays the status data. In oneembodiment, the system status display 208 includes a switch that turnsthe system status display on and off. In another embodiment, at leastone command is transmitted to the ventilation control system 206 via thesystem status display 208. In another embodiment, the at least onecommand is transmitted to the ventilation control system 206 via thesystem status display 208 upon user command. In one embodiment, the SSDcommands include power save, primary display shut-down, system statusdisplay shut-down, stand-by, charge, breath-type set-up, pressuresupport set-up, oxygen percent set-up, tidal volume set-up, breath-typechange, pressure support change, oxygen percent change, and/or tidalvolume change. All of the commands listed above are not limiting. Othersuitable commands for controlling a ventilator system may be added tothe system status display.

The status data of the system status display 208 may display anysuitable information, such as patient parameters, ventilationparameters, sensor readings, ventilator information, and/or calculatedparameters. In one embodiment, the status data of the system statusdisplay 208 are selected from ventilator status, primary display status,the available gas sources, the utilized gas source or sources, theavailable power sources, the utilized power source, the pressure traceof inspiratory pressure or manometer, low pressure level (e.g., lowpositive end expiratory pressure or PEEP), peak inspiratory pressure(P_(PEAK)), battery system status, use of a battery, battery chargelevel, and battery status. All of this information may be depicted inany suitable manner utilizing icons, graphs, charts, text, light, lightintensity, and/or color.

In one embodiment, ventilator status includes ventilating status (i.e.actively ventilating a patient or not in use), primary display status,breath-type, warnings or alarms issued, and/or normal status (i.e. nowarnings or alarms are being displayed or executed). In anotherembodiment, primary display status indicates at least one of whether theprimary display is attached to the ventilator, displaying the graphicaluser interface, or is in communication with the ventilator. In anotherembodiment, the breath type (Assist, Control, & Spontaneous) utilizedmay be graphically display verses time, as illustrated in FIG. 4.

In yet another embodiment, battery system status includes if a batteryis connected to the ventilator, if a battery is disconnected from theventilator, if a battery is in use, if a battery is charged, chargelevel of a battery and/or an estimate of battery life. The charge levelof the battery may be depicted as a fuel gauge or as a time durationcounting down the amount of useable life left on the battery.

The manometer may display the peak inspiratory pressure (P_(PEAK)),PEEP, and inspiratory pressure in thermometer-type display asillustrated in FIG. 3. As the inspiratory pressure changes, themanometer may demonstrate this with the movement of the pressure meterup and down the vertical scale. In a further embodiment, the manometermay illustrate high and low alarm setting for the peak inspiratorypressure. In another embodiment, the pressure ranges of the manometermay change based on the patient setting (e.g. adult, pediatric, orneonate) of the ventilator.

Ventilation system 200 further includes a primary display housing 210.The primary display housing 210 is removably attached to the mainhousing 202. In this embodiment, the primary display housing 210includes a primary display controller 212 and a primary display 214, asillustrated in FIG. 2. In an alternative embodiment, the primary displaycontroller 212 is located in the main housing 202. In anotherembodiment, the primary display controller 212 is located in a separatecomponent independent of the main housing 202 and the primary displayhousing 210.

Primary display 214 presents the graphical user interface. In oneembodiment, the primary display 214 includes a mechanism that turns theprimary display 214 on and off. In another embodiment, the system statusdisplay 208, when in operation, uses at least less than 10%, morepreferable less than 5% and even more preferably less than 2% of thepower used by the primary display when in operation. In yet anotherembodiment, the system status display 208, when in operation, uses atleast less than 50% of the power used by the primary display when inoperation. In yet a further embodiment, the system status display 208,when in operation, uses at least less than 80% of the power used by theprimary display 214 when in operation

In an alternative embodiment, the system status display 208 has alow-power mode for conserving power consumption. The low-power modereduced the amount of power consumed by the SSD 208 by at least 10%. Inone embodiment, the low-power mode reduced the amount of power consumedby the SSD 208 by at least 50%. In another embodiment, the low-powermode reduced the amount of power consumed by the SSD 208 by at least80%. In one embodiment, the SSD 208 enters the low-power mode when theprimary display housing 210 is removed. In an additional embodiment, theSSD 208 is placed in a low-power mode when the primary display housing210 is malfunctioning or disconnected. In another embodiment, the SSD208 enters a low-power mode based on user command.

Primary display controller 212 generates the graphical user interface,receives user inputs through the graphical user interface, and deliverscommands to the ventilation control system based on the inputs. In oneembodiment, the primary display controller 212 places the primarydisplay 214 in a safe disconnect mode to allow the primary displayhousing 210 to be removed. In an additional embodiment, the primarydisplay controller 212 is placed in a low-power mode when the primarydisplay housing 210 is removed. In another embodiment, the primarydisplay controller 212 is turned off when the primary display housing210 is removed. In yet another embodiment, the primary displaycontroller 212 is turned off or placed in a low-power mode based on usercommand.

In one embodiment, the at least one command from the system statusdisplay 208 is transmitted to the ventilation control system 206 via acontroller of system status display 208 when the primary display housing210 is removed, turned off, disabled, and/or malfunctioning. In anotherembodiment, when the ventilation system 200 is ventilating a patient,the ventilation control system 206 causes the system status display 208to display a first set of status data when the primary display housing210 is attached and a second set of status data different from the firstset of status data when the primary display housing 210 is removed.

In one embodiment, ventilation system 200 includes one or morebatteries. In another embodiment, when the ventilation system 200 isventilating a patient, the primary display controller 212 and primarydisplay 214 are placed in a low-power mode when the ventilation system200 is powered from the one or more batteries. In another embodiment,the primary display controller 212 and primary display 214 are placed ina low-power mode upon user command. In a further embodiment, when theventilation system 200 is ventilating a patient, the primary displaycontroller 212 and primary display 214 are turned off when theventilation system 200 is powered from the one or more batteries. In analternative embodiment, when the ventilation system 200 is ventilating apatient, the primary display controller 212 and primary display 214 areturned off based on user command. In an additional embodiment, when theventilation system 200 is ventilating a patient, the ventilation controlsystem 206 causes the system status display 208 to display a third setof status data when the ventilation system 200 is powered from anexternal source and a fourth set of status data different from the thirdset of status data when the ventilation system 200 is powered from theone or more batteries. In yet another embodiment, the ventilationcontrol system 206 causes the system status display 208 to display afifth set of status data when the ventilation system 200 is powered froman external source and the primary display 214 is turned off. In analternative embodiment, the ventilation control system 206 causes thesystem status display 208 to display the first set of status data, thesecond set of status data, the third set of status data, the fourth setof status data, or the fifth set of status data based on user command.

FIG. 10 illustrates a method for displaying ventilator information 1000.As illustrated, method 1000 displays a first set of status data on thesystem status display 1002. In one embodiment, the first set of statusdata is at least one of ventilator status, available gas sources,utilized gas source or sources, available power sources, utilized powersource, pressure trace of inspiratory pressure, low pressure level(PEEP), peak inspiratory pressure, battery system status, batteries inuse, battery charge level, and a battery status. In another embodiment,the first set of data displayed by first display operation 1002 is thescreen shot of an SSD illustrated in FIG. 3. In yet another embodiment,the first set of data displayed by first display operation 1002 is thescreen shot of an SSD illustrated in FIG. 4.

Next, method 1000 utilizes a determination operation 1004. Determinationoperation 1004 determines if the primary display is at least one ofremoved from a ventilator housing, malfunctioning, turned off, anddisabled. If determination operation 1004 determines that the primarydisplay is removed from a ventilator housing, malfunctioning, turnedoff, and/or disabled, determination operation 1004 selects to perform asecond display operation 1006. If determination operation 1004determines that the primary display is not removed from a ventilatorhousing, malfunctioning, turned off, and disabled, determinationoperation 1004 selects to perform first display operation 1002. In oneembodiment, method 1000 removes the primary display from the mainhousing. In this embodiment, the determination operation 1004 determinesthat the primary display is removed from the primary housing and selectsto perform a second display operation 1006.

The second display operation 1006 displays a second set of status dataon the system status display that is different from the first set ofstatus data. In one embodiment, the second set of status data is atleast one of ventilator status, available gas sources, utilized gassource or sources, available power sources, utilized power source,pressure trace of inspiratory pressure, low pressure level (Peep), peakinspiratory pressure (P_(PEAK)), breath type (i.e. Assist, Control, orSpontaneous), battery system status, batteries in use, battery chargelevel, and a battery status. In one embodiment, the second set of statusdisplay data displayed by second display operation 1006 is the screenshot of an SSD illustrated in FIG. 7. In another embodiment, the secondset of status display data displayed by the second display operation1006 is the screen shot of an SSD illustrated in FIG. 8.

In one embodiment, the second set of status display data displayed by asecond display operation 1006 is the screen shot of an SSD illustratedin FIG. 5. In an additional embodiment, the second set of status displaydata displayed by second display operation 1006 is the screen shot of anSSD illustrated in FIG. 6.

After the performance of the second display operation 1006, method 1000performs determination operation 1004 again. In one embodiment, method1000 further includes utilizing less than 10% of power used by theprimary display when in operation to power the system status display. Inanother embodiment, method 1000 further includes utilizing less than 50%of power used by the primary display when in operation to power thesystem status display. In yet another embodiment, method 1000 furtherincludes utilizing less than 80% of power used by the primary displaywhen in operation to power the system status display. Accordingly, theoperation of the system status display utilizes less power than theoperation of the primary display.

FIG. 11 illustrates a method for displaying ventilator information 1100.As illustrated, method 1100 displays a first set of status data on thesystem status display 1102. In one embodiment, the first set of statusdata is at least one of ventilator status, available gas sources,utilized gas source or sources, available power sources, utilized powersource, pressure trace of inspiratory pressure, low pressure level(PEEP), peak inspiratory pressure, breath type (i.e. Assist, Control, orSpontaneous), battery system status, batteries in use, battery chargelevel, and a battery status. In another embodiment, the first set ofdata displayed by display operation 1102 is the screen shot of an SSDillustrated in FIG. 3. In a further embodiment, the first set of datadisplayed by display operation 1102 is the screen shot of an SSDillustrated in FIG. 4.

Next, method 1100 utilizes a determination operation 1104. Determinationoperation 1104 determines if a ventilation system is receiving powerfrom only one or more batteries. If determination operation 1104determines that the ventilation system is receiving power from only oneor more batteries, determination operation 1104 selects to performdisplay operation 1106. If determination operation 1104 determines thatthe ventilation system is not receiving power from only one or morebatteries, determination operation 1104 selects to perform the displayoperation 1102.

The display operation 1106 displays a second set of status data on thesystem status display that is different from the first set of statusdata. In one embodiment, the second set of status data is at least oneof ventilator status, available gas sources, utilized gas source orsources, available power sources, utilized power source, pressure traceof inspiratory pressure, low pressure level (Peep), peak inspiratorypressure, breath type (i.e. Assist, Control, or Spontaneous), batterysystem status, batteries in use, battery charge level, and a batterystatus. In another embodiment, the second set of status display datadisplayed by display operation 1106 is the screen shot of an SSDillustrated in FIG. 5. In yet another embodiment, the second set ofstatus display data displayed by display operation 1106 is the screenshot of an SSD illustrated in FIG. 6. In a further embodiment, thesecond set of status display data displayed by display operation 1106 isthe screen shot of an SSD illustrated in FIG. 7. In an additionalembodiment, the second set of status display data displayed by displayoperation 1106 is the screen shot of an SSD illustrated in FIG. 8.

After the performance of the display operation 1106, method 1100performs determination operation 1104 again. In one embodiment, method1100 further includes utilizing less than 50% of power used by theprimary display when in operation to power the system status displaywhen in operation. In another embodiment, method 1100 further includesutilizing less than 10% of power used by the primary display when inoperation to power the system status display when in operation. In yetanother embodiment, method 1100 further includes utilizing less than 80%of power used by the primary display when in operation to power thesystem status display when in operation. Accordingly, the operation ofthe system status display utilizes less power than the operation of theprimary display and will allow the ventilation system to utilize lesspower when relying on battery power to operate.

In a further embodiment, method 1100 includes a primary displaydetermination operation. In this embodiment, determination operation1104 selects to perform the primary display determination operation ifdetermination operation 1104 determines that the ventilation system isreceiving power from only one or more batteries instead of selecting toperform display operation 1106. In this embodiment, the primary displaydetermination operation determines if the primary display is at leastone of removed from a ventilator main housing, malfunctioning, turnedoff, and disabled. If primary display determination operation determinesthat the primary display is removed from a ventilator housing,malfunctioning, turned off, and/or disabled, primary displaydetermination operation selects to perform a third display operation. Inthis embodiment, the third display operation displays a third set ofstatus data on the system status display that is different from thefirst set of status data and different from the second set of statusdata. After performing the third display operation, method 1100 performsthe determination operation 1104 again. If primary display determinationoperation determines that the primary display is not removed from aventilator housing, malfunctioning, turned off, and disabled, primarydisplay determination operation selects to perform the display operation1106.

FIG. 12 illustrates a method for displaying ventilator information 1200.As illustrated, method 1200 displays a first set of status data on thesystem status display 1202. In one embodiment, the first set of statusdata is at least one of ventilator status, available gas sources,utilized gas source or sources, available power sources, utilized powersource, pressure trace of inspiratory pressure, low pressure level(PEEP), peak inspiratory pressure (P_(PEAK)), breath type (i.e. Assist,Control, or Spontaneous), battery system status, batteries in use,battery charge level, and a battery status. In another embodiment, thefirst set of data displayed by display operation 1202 is the screen shotof an SSD illustrated in FIG. 3. In a further embodiment, the first setof data displayed by display operation 1202 is the screen shot of an SSDillustrated in FIG. 4.

Next, method 1200 utilizes a first determination operation 1204. Firstdetermination operation 1204 determines if the primary display is atleast one of removed from a ventilator housing, malfunctioning, turnedoff, and disabled. If first determination operation 1204 determines thatthe primary display is removed from a ventilator housing,malfunctioning, turned off, and/or disabled, first determinationoperation 1204 selects to perform a second display operation 1208. Iffirst determination operation 1204 determines that the primary displayis not removed from a ventilator housing, malfunctioning, turned off,and disabled, first determination operation 1204 selects to perform asecond determination operation 1206.

Second determination operation 1206 determines if a ventilation systemis receiving power from only one or more batteries. If seconddetermination operation 1206 determines that the ventilation system isreceiving power from only one or more batteries, second determinationoperation 1206 selects to perform a third display operation 1210. Ifsecond determination operation 1206 determines that the ventilationsystem is not receiving power from only one or more batteries, seconddetermination operation 1206 selects to perform the display operation1202.

The second display operation 1208 displays a second set of status dataon the system status display that is different from the first set ofstatus data. In one embodiment, the second set of status data is atleast one of ventilator status, available gas sources, utilized gassource or sources, available power sources, utilized power source,pressure trace of inspiratory pressure, low pressure level (Peep), peakinspiratory pressure, breath type (i.e. Assist, Control, orSpontaneous), battery system status, batteries in use, battery chargelevel, and a battery status. In another embodiment, the second set ofstatus display data displayed by second display operation 1208 is thescreen shot of an SSD illustrated in FIG. 5. In a further embodiment,the second set of status display data displayed by second displayoperation 1208 is the screen shot of an SSD illustrated in FIG. 7. In anadditional embodiment, the second set of status display data displayedby second display operation 1208 is the screen shot of an SSDillustrated in FIG. 8. In one embodiment, the second set of statusdisplay data displayed by display operation 1208 is the screen shot ofan SSD illustrated in FIG. 6.

The third display operation 1210 displays a third set of status data onthe system status display that is different from the first set of statusdata. The second and third set of status data may be the same ordifferent. In one embodiment, the third set of status data is at leastone of ventilator status, available gas sources, utilized gas source orsources, available power sources, utilized power source, pressure traceof inspiratory pressure, low pressure level (Peep), peak inspiratorypressure, breath type (Assist, Control, or Spontaneous), battery systemstatus, batteries in use, battery charge level, and a battery status. Inanother embodiment, the third set of status display data displayed bythird display operation 1208 is the screen shot of an SSD illustrated inFIG. 5. In a further embodiment, the third set of status display datadisplayed by third display operation 1208 is the screen shot of an SSDillustrated in FIG. 7. In an additional embodiment, the third set ofstatus display data displayed by third display operation 1208 is thescreen shot of an SSD illustrated in FIG. 8.

In one embodiment, the order of the first determination step 1204 andsecond determination operation 1206 may be switched. In this embodiment,if second determination operation 1206 determines that the ventilationsystem is not receiving power from only one or more batteries, seconddetermination operation 1206 selects to perform first determinationoperation 1204. Accordingly, in this embodiment, if first determinationoperation 1204 determines that the primary display is not removed from aventilator housing, malfunctioning, turned off, and disabled, firstdetermination operation 1204 selects to perform the display operation1202.

After the performance of the second display operation 1208, method 1200performs first determination operation 1204 again. In one embodiment,method 1200 includes utilizing less than 10% of power used by theprimary display when in operation to power the system status displaywhen in operation. In another embodiment, method 1200 includes utilizingless than 50% of power used by the primary display when in operation topower the system status display when in operation. In yet anotherembodiment, method 1200 includes utilizing less than 80% of power usedby the primary display when in operation to power the system statusdisplay when in operation. Accordingly, the operation of the systemstatus display utilizes less power than the operation of the primarydisplay and will allow the ventilation system to utilize less power whenrelying on battery power to operate.

FIG. 13 illustrates a method for displaying ventilator information 1300.As illustrated, method 1300 determines if a ventilator system isventilating a patient 1302. The ventilator system includes a primarydisplay removable from a ventilator housing and a system status display(SSD). If determination operation 1302 determines that the ventilatorsystem is ventilating a patient, determination operation 1302 selects toperform the SSD control operation 1304, the primary display controloperation 1306, and determination operation 1308.

Control operation 1304 controls the SSD with a ventilator controlsystem. Control operation 1306 controls the primary display with aprimary display controller. Determination operation 1308 determineswhether an internal power or an external power source is being utilizedby the ventilator. If determination operation 1308 determines that theventilator is utilizing an external power source, determinationoperation 1308 selects to perform determination operation 1310. Ifdetermination operation 1308 determines that the ventilator is utilizingan internal power source, determination operation 1308 selects toperform determination operation 1316.

Determination operations 1310 and 1316 determine if the primary displayis attached to the main ventilator housing and if the primary display isdisplaying the graphical user interface. If determination operation 1310determines that the primary display is attached to the main ventilatorhousing and that the primary display is displaying the graphical userinterface, determination operation 1310 selects to perform displayoperation 1312. Display operation 1312 displays a first set of SSD data.If determination operation 1310 determines that the primary display isnot attached to the main ventilator housing and that the primary displayis not displaying the graphical user interface, determination operation1310 selects to perform display operation 1314. Display operation 1314displays a second set of SSD data.

If determination operation 1316 determines that the primary display isnot attached to the main ventilator housing and that the primary displayis not displaying the graphical user interface, determination operation1316 selects to perform display operation 1320. Display operation 1320displays a third set of SSD data. If determination operation 1316determines that the primary display is attached to the main ventilatorhousing and that the primary display is displaying the graphical userinterface, determination operation 1316 selects to perform displayoperation 1318. Display operation 1318 displays a fourth set of SSDdata.

If determination operation 1302 of method 1300 determines that theventilator system is not ventilating a patient, determination operation1302 selects to perform the SSD control operation 1322, the primarydisplay control operation 1324, and determination operation 1326.

Control operation 1322 controls the SSD with a ventilator controlsystem. Control operation 1324 controls the primary display with aprimary display controller. Determination operation 1326 determineswhether an internal power or an external power source is being utilizedby the ventilator. If determination operation 1326 determines that theventilator is utilizing an external power source, determinationoperation 1326 selects to perform determination operation 1328. Ifdetermination operation 1326 determines that the ventilator is utilizingan internal power source, determination operation 1326 selects toperform determination operation 1334.

Determination operations 1328, 1334 determine if the primary display isattached to the main ventilator housing and if the primary display isdisplaying the graphical user interface. If determination operation 1328determines that the primary display is attached to the main ventilatorhousing and that the primary display is displaying the graphical userinterface, determination operation 1328 selects to perform displayoperation 1332. Display operation 1332 displays an eighth set of SSDdata. If determination operation 1328 determines that the primarydisplay is not attached to the main ventilator housing and that theprimary display is not displaying the graphical user interface,determination operation 1328 selects to perform display operation 1330.Display operation 1330 displays a fifth set of SSD data.

If determination operation 1334 determines that the primary display isnot attached to the main ventilator housing and that the primary displayis not displaying the graphical user interface, determination operation1334 selects to perform display operation 1336. Display operation 1336displays a sixth set of SSD data. If determination operation 1334determines that the primary display is attached to the main ventilatorhousing and that the primary display is displaying the graphical userinterface, determination operation 1334 selects to perform displayoperation 1338. Display operation 1338 displays a seventh set of SSDdata.

In one embodiment, method 1300 further includes operating the SSD onless power than the amount of power necessary to operate the primarydisplay. In another embodiment, method 1300 utilizes less than 10% ofpower used by the primary display when in operation to power the systemstatus display when in operation. In yet another embodiment, method 1300utilizes less than 50% of power used by the primary display when inoperation to power the system status display when in operation. In afurther embodiment, method 1300 utilizes less than 80% of power used bythe primary display when in operation to power the system status displaywhen in operation.

In another embodiment, method 1300 displays a different set of data onthe SSD based on at least one of a location of the primary display, datadisplayed on the primary display, and a power source. In one embodiment,the first, second, third, fourth, fifth, sixth, seventh, and eighth datasets are all different. In an alternative embodiment, at least one ofthe first, second, third, fourth, fifth, sixth, seventh, and eighth datasets are different. In another embodiment, the first, second, third,fourth, fifth, sixth, seventh, and eighth data sets are all the same. Ina further embodiment, data and/or data sets displayed on the SSD is userselectable and/or configurable. In yet another embodiment, the data setdisplayed on the SSD is based on at least one of one of a location ofthe primary display, data displayed on the primary display, and a powersource are user selectable and/or configurable.

In one embodiment, method 1300 displays at least one of sensor readings,ventilator parameters, ventilator calculations, and patient parameterson the SSD. In another embodiment, method 1300 displays at least one ofventilator status, available gas sources, utilized gas source orsources, available power sources, utilized power source, pressure traceof inspiratory pressure, low pressure level (Peep), peak inspiratorypressure, breath type (Assist, Control, or Spontaneous), battery systemstatus, batteries in use, battery charge level, and a battery status. Inone embodiment, the eighth set of SSD data and/or the fifth set of SSDdata includes batteries in use, battery charge level, and/or a batterystatus.

FIG. 14 illustrates a method for controlling a ventilator system 1400.As illustrated, method 1400 determines if a ventilator system isventilating a patient 1402. The ventilator system includes a primarydisplay removable from a main ventilator housing and a system statusdisplay (SSD). If determination operation 1402 determines that theventilator system is ventilating a patient, determination operation 1402selects to perform the SSD control operation 1404, the primary displaycontrol operation 1406, and determination operation 1408.

Control operation 1404 controls the SSD with a ventilator controlsystem. Further, the ventilation control system receives and executesuser selected secondary commands from the system status display. Controloperation 1406 controls the primary display with a primary displaycontroller. Further, the primary display controller receives andexecutes user selected primary commands from the primary display.Determination operation 1408 determines whether an internal power or anexternal power source is being utilized by the ventilator. Ifdetermination operation 1408 determines that the ventilator is utilizingan external power source, determination operation 1408 selects toperform determination operation 1410. If determination operation 1408determines that the ventilator is utilizing an internal power source,determination operation 1408 selects to perform determination operation1416.

Determination operations 1410, 1416 determine if the primary display isattached to the main ventilator housing and if the primary display isdisplaying the graphical user interface. If determination operation 1410determines that the primary display is attached to the main ventilatorhousing and that the primary display is displaying the graphical userinterface, determination operation 1410 selects to offer a first set ofSSD commands 1412. In one embodiment, the first set of SSD commandsincludes power save, primary display shut-down, system status displayshut-down, breath-type change, pressure support change, oxygen percentchange, and/or tidal volume change. In another embodiment, determinationoperation 1410 selects to offer no SSD secondary commands. Ifdetermination operation 1410 determines that the primary display is notattached to the main ventilator housing and that the primary display isnot displaying the graphical user interface, determination operation1410 selects to offer a second set of SSD commands 1414. In oneembodiment, the second set of SSD commands includes power save, primarydisplay shut-down, breath-type change, pressure support change, oxygenpercent change, and/or tidal volume change.

If determination operation 1416 determines that the primary display isnot attached to the main ventilator housing and that the primary displayis not displaying the graphical user interface, determination operation1416 selects to offer a third set of SSD commands 1420. In oneembodiment, the third set of SSD commands includes power save, primarydisplay shut-down, breath-type change, pressure support change, oxygenpercent change, and/or tidal volume change. If determination operation1416 determines that the primary display is attached to the mainventilator housing and that the primary display is displaying thegraphical user interface, determination operation 1416 selects to offera fourth set of SSD commands 1418. In one embodiment, the fourth set ofSSD commands includes power save, primary display shut-down, systemstatus display shut-down, breath-type change, pressure support change,oxygen percent change, and/or tidal volume change.

If determination operation 1402 of method 1400 determines that theventilator system is not ventilating a patient, determination operation1402 selects to perform the SSD control operation 1422, the primarydisplay control operation 1424, and determination operation 1426.

Control operation 1422 controls the SSD with a ventilator controlsystem. Further, the ventilation control system receives and executesuser selected secondary commands from the system status display. Controloperation 1424 controls the primary display with a primary displaycontroller. Further, the primary display controller receives andexecutes user selected primary commands from the primary display.Determination operation 1426 determines whether an internal power or anexternal power source is being utilized by the ventilator. Ifdetermination operation 1426 determines that the ventilator is utilizingan external power source, determination operation 1426 selects toperform determination operation 1428. If determination operation 1426determines that the ventilator is utilizing an internal power source,determination operation 1426 selects to perform determination operation1434.

Determination operations 1428, 1434 determine if the primary display isattached to the main ventilator housing and if the primary display isdisplaying the graphical user interface. If determination operation 1428determines that the primary display is attached to the main ventilatorhousing and that the primary display is displaying the graphical userinterface, determination operation 1428 selects to offer an eighth setof SSD commands 1432. In one embodiment, the eighth set of SSD commandsincludes power save, primary display shut-down, system status displayshut-down, breath-type set-up, pressure support set-up, oxygen percentset-up, and/or tidal volume set-up.

If determination operation 1432 determines that the primary display isnot attached to the main ventilator housing and that the primary displayis not displaying the graphical user interface, determination operation1432 selects to offer a fifth set of SSD commands 1430. In oneembodiment, the first set of SSD commands includes power save, primarydisplay shut-down, system status display shut-down, breath-type set-up,pressure support set-up, oxygen percent set-up, and/or tidal volumeset-up.

If determination operation 1434 determines that the primary display isnot attached to the main ventilator housing and that the primary displayis not displaying the graphical user interface, determination operation1434 selects to offer a sixth set of SSD commands 1436. In oneembodiment, the sixth set of SSD commands includes power save, primarydisplay shut-down, system status display shut-down, breath-type set-up,pressure support set-up, oxygen percent set-up, and/or tidal volumeset-up. If determination operation 1434 determines that the primarydisplay is attached to the main ventilator housing and that the primarydisplay is displaying the graphical user interface, determinationoperation 1434 selects to offer a seventh set of SSD commands 1438. Inone embodiment, the seventh set of SSD commands includes power save,primary display shut-down, system status display shut-down, breath-typeset-up, pressure support set-up, oxygen percent set-up, and/or tidalvolume set-up. All of the commands listed above for each feature are notlimiting. Other suitable commands for controlling a ventilator systemmay be added to the system status display.

In one embodiment, method 1400 further includes operating the SSD onless power than the amount of power necessary to operate the primarydisplay. In another embodiment, method 1400 utilizes less than 10% ofpower used by the primary display when in operation to power the systemstatus display when in operation.

In another embodiment, method 1400 displays a different set of SSDcommands on the SSD based on at least one of a location of the primarydisplay, data displayed on the primary display, and a power source. Inone embodiment, the first, second, third, fourth, fifth, sixth, seventh,and eighth sets of SSD commands are all different. In an alternativeembodiment, at least one of the first, second, third, fourth, fifth,sixth, seventh, and eighth sets of SSD commands are different. Inanother embodiment, the first, second, third, fourth, fifth, sixth,seventh, and eighth sets of SSD commands are all the same. In a furtherembodiment, the commands displayed on the SSD are user selectable and/orconfigurable. In yet another embodiment, the set of commands on the SSDare based on at least one of one of a location of the primary display,data displayed on the primary display, and a power source are userselectable and/or configurable.

In one embodiment, method 1400 displays at least one of sensor readings,ventilator parameters, ventilator calculations, and patient parameterson the SSD. In another embodiment, method 1400 displays at least one ofventilator status, available gas sources, utilized gas source orsources, available power sources, utilized power source, pressure traceof inspiratory pressure, low pressure level (Peep), peak inspiratorypressure, battery system status, batteries in use, battery charge level,and a battery status.

In another embodiment, determination operations 1410, 1416, 1428, and1434 may select to offer no secondary commands on the system statusdisplay. In a further embodiment, the user may select to not offer anysecondary commands on the system status display.

It will be clear that the systems and methods described herein are welladapted to attain the ends and advantages mentioned as well as thoseinherent therein. Those skilled in the art will recognize that themethods and systems within this specification may be implemented in manymanners and, as such, are not to be limited by the foregoing exemplifiedembodiments and examples. For example, the operations and steps of theembodiments of methods described herein may be combined or the sequenceof the operations may be changed while still achieving the goals of thetechnology. In addition, specific functions and/or actions may also beallocated in such a way as to be performed by a different module ormethod step without deviating from the overall disclosure. In otherwords, functional elements being performed by a single or multiplecomponents, in various combinations of hardware, firmware, and software,and individual functions can be distributed among software applications.In this regard, any number of the features of the different embodimentsdescribed herein may be combined into one single embodiment andalternate embodiments having fewer than or more than all of the featuresdescribed herein are possible.

While various embodiments have been described for purposes of thisdisclosure, various changes and modifications may be made which are wellwithin the scope of the present invention. Numerous other changes may bemade which will readily suggest themselves to those skilled in the artand which are encompassed in the spirit of the disclosure and as definedin the appended claims.

Unless otherwise indicated, all numbers expressing quantities,properties, reaction conditions, and so forth used in the specificationand claims are to be understood as being modified in all instances bythe term “about.” Accordingly, unless indicated to the contrary, thenumerical parameters set forth in the following specification andattached claims are approximations that may vary depending upon thedesired properties sought to be obtained by the present invention.

EXAMPLES

The following are embodiments of displays that could be shown on the SSDof a medical ventilator.

The following are embodiments of pressure traces or manometer that couldbe displayed on SSD to allow an operator to determine from the SSD theventilator's ability to support breath delivery to the patient.

In one embodiment, as the SSD displays a pressure trace or manometerthat indicates that pressure is transitioning between two points, suchas PEEP and Peak Inspiratory Pressure (P_(PEAK)). As illustrated in FIG.3, an embodiment of a screen shot of an SSD, the SSD displays a pressuretrace that provides an indication of the rise time of the pressure andthe pressure levels. Further, as shown in the FIG. 3 embodiment, the SSDprovides a continuous display of the minimum and peak inspiratorypressure levels. In one embodiment, the pressure trace can be scaled toprovide for the highest level of resolution on the SSD.

While not shown in this embodiment, in an alternative embodiment, themanometer includes high and low peak inspiratory pressure alarms. Thealarms can be shown as a mark graphically on the manometer or justlisted as text beside the manometer. Additionally, while not shown inthis embodiment, the ranges of the manometer change based on theselected patient setting. Accordingly, the pressure ranges varydepending upon if the ventilator is in an adult, pediatric, or neonatesetting.

In another embodiment, the SSD displays current breath-type to allow anoperator to determine from the SSD the ventilator's ability to supportbreath delivery to the patient. In one embodiment the SSD displays abreath-type indicator or shows the type of breath being delivered by theventilator (Assist, Control, or Spontaneous). As illustrated in theembodiment of an SSD screen shot in FIG. 4, the SSD displays acontinuous graph to show the type of breath being delivered verses timein seconds (i.e. A=Assist, C=Control, and S=Spontaneous, but is notshown).

The following are embodiments of the types of information that could bepresented on an SSD to allow an operator to determine from the SSD theventilator's ability to support breath delivery to the patient.

In one embodiment, the SSD displays ventilator status information, GUIsummary information for the primary display, available gas sources andinstalled gas input connections, power system information, and/orbattery system status information. The ventilator status informationindicates the current mode of the ventilator, such as Normal, Stand-by,Charge, Back-Up Ventilation, Safety Valve Open, or VentilatorInoperative. The summary information for the GUI on the primary displaymay include displaying a loss of GUI communication and other errorsassociated with the primary display. The available gas sources andinstalled gas input connections displayed may include Air, Oxygen,HeliOx, and/or Nitrogen. While not illustrated in this embodiment, thedisplay may show other types of gas sources. The Power SystemInformation displayed may include the active power source, such as AC orBattery power sources. In another embodiment the battery system statusinformation may include if and which batteries are in use, batterycharge level, such as graphically depicting the level as a fuel gaugeand/or battery status (i.e. normal). In another embodiment, the batterycharge level may be shown by the amount of use time the batteries haveleft. In a further embodiment, the fuel gauge depiction of the batterycharge level may be color coded for easy interpretation.

In one embodiment, the SSD displays transport-specific information(displayed during patient transport. The patient transport informationmay include vital patient data and data presented in waveforms. In oneembodiment, the SSD includes an input mechanism for making settingchanges, invoking functions, and/or silencing alarms.

In another embodiment, the SSD displaysinternationalization/localization support data. In one embodiment, theinternationalization/localization support data includes labeling anddisplay information to be in multiple languages or language selectable,use of alpha/numeric support to produce one base configuration for theSSD that can be updated with software support during manufacturing,installation, and/or during operation, and adding character sets formultiple languages to allow an operator to change all patient and systeminformation during use or during the patient setup.

In another embodiment, the SSD has additional support modes. In oneembodiment, the SSD utilizes a low-power display. Accordingly, only asmall amount of power is necessary to ventilator information on the SSD.In another embodiment, the SSD is operated by the ventilator in standbypower. Standby power is a mode where generally only the ventilatorcontroller circuitry is powered. In yet another embodiment, the SSDprovides for a charge mode. The charge mode may include chargingbatteries while the ventilator is supplied with AC power and the powerswitch is in the off position and/or on position. Further, the SSD, inanother embodiment displays fuel gauges and/or power system status. Inone embodiment, SSD displays the status of installed options.

As illustrated in FIG. 5, an embodiment of an SSD screen shot is shown.In this embodiment, the SSD displays the following: ventilator status asnormal; the available gas sources as air, oxygen, and heliox; theutilized gas sources as oxygen and air; the available power sources asAC and battery; the power source being utilized as battery; the pressuretrace of inspiratory pressure including highlighted low pressure level(Peep) and peak inspiratory pressure (P_(PEAK)); and battery systemstatus including showing that batteries were in use for both breathdelivery and compressor, battery charge level depicted graphically as afuel gauge for both the breath delivery and compressor batteries, and abattery status as normal for both the breath delivery and compressorbatteries.

As illustrated in FIG. 6, an embodiment of an SSD screen shot is shown.In this embodiment, the SSD displays the following: ventilator status asnormal; the available gas sources as air, oxygen, and heliox; theutilized gas sources as oxygen and air; the available power sources asAC and battery; the power source being utilized as AC; the pressuretrace of inspiratory pressure including highlighted low pressure level(Peep) and peak inspiratory pressure; and battery system statusincluding depicting that neither the breath delivery or compressor werein use, the battery charge level graphically as a fuel gauge for boththe breath delivery and compressor batteries, and a battery status as indefault for the breath delivery battery and as normal for the compressorbattery.

As illustrated in FIG. 7, an embodiment of an SSD screen shot is shown.In this embodiment, the SSD displays the following: ventilator status asnormal, with a loss of GUI communication; the available gas sources asair, oxygen, and heliox; the utilized gas sources as oxygen and air; theavailable power sources as AC and battery; the power source beingutilized as AC; a breath-type indicator depicted graphically verses timein seconds; and a battery system status including depicting that neitherthe breath delivery or compressor were in use, the battery charge levelgraphically as a fuel gauge for both the breath delivery and compressorbatteries, and a battery status as normal for both the breath deliverybattery and the compressor battery.

As illustrated in FIG. 8, an embodiment of an SSD screen shot is shown.In this embodiment, the SSD displays the following: ventilator status asnormal, with a loss of GUI communication; the available gas sources asair, oxygen, and heliox; the utilized gas sources as oxygen and air; theavailable power sources as AC and battery; the power source beingutilized as AC; a breath-type indicator depicted graphically verses timein seconds; and a battery system status including depicting that neitherthe breath delivery or compressor were in use, the battery charge levelgraphically as a fuel gauge for both the breath delivery and compressorbatteries, and a battery status as normal for both the breath deliverybattery and the compressor battery. In this embodiment, as illustratedin FIG. 8, the breath-type indicator depicted graphically verses time inseconds is in a different location compared to FIG. 7.

As illustrated in FIG. 9, an embodiment of a ventilator display system900 is shown. The ventilator display system includes a primary removabledisplay 902 and system status display (SSD) 904. In this embodiment,primary display 902 is an electronic GUI. The SSD 904 shown in FIG. 9 isa stand alone display, completely independent of the primary display andits related subsystems. Further, SSD 904 illustrates a redundantpressure trace (redundant in the sense that the same data is beingdisplay, albeit in a different format, on the primary display) that canbe used to determine operational state of the breath delivery system.The redundant pressure trace displayed on SSD 904 is useful in the eventof a primary display malfunction or as a transport device.

What is claimed is:
 1. A ventilation system comprising: a main housing;a gas delivery system in the main housing; a ventilation control systemin the main housing that controls the gas delivery system and monitorsone or more of a patient physiological parameter, operational parametersof the ventilation system and user-settable parameters; a primarydisplay controller that generates a graphical user interface and thatreceives user inputs through the graphical user interface and deliverscommands to the ventilation control system based on the inputs; aprimary display housing removably attached to the main housing; aprimary display in the primary display housing that presents thegraphical user interface; and a system status display incorporated intothe main housing that receives status data directly from the ventilationcontrol system and displays the status data, and wherein when theventilation system is ventilating a patient, the ventilation controlsystem causes the system status display to display a first set of statusdata when the primary display housing is attached and a second set ofstatus data different from the first set of status data when the primarydisplay housing is removed.
 2. The ventilation system of claim 1,wherein: the primary display controller is in the primary displayhousing.
 3. The ventilation system of claim 1, wherein: the primarydisplay controller is in the main housing and is placed in a low-powermode when the primary display housing is removed.
 4. The ventilationsystem of claim 3, wherein: the primary display controller is turned offwhen the primary display housing is removed.
 5. The ventilation systemof claim 1 further comprising; one or more batteries; and wherein, whenthe ventilation system is ventilating a patient, the primary displaycontroller and primary display are placed in a low-power mode when theventilation system is powered from the one or more batteries.
 6. Theventilation system of claim 5 further comprising; wherein, when theventilation system is ventilating a patient, the primary displaycontroller and primary display are turned off when the ventilationsystem is powered from the one or more batteries.
 7. The ventilationsystem of claim 1, further comprising: one or more batteries; andwherein, when the ventilation system is ventilating a patient, theventilation control system causes the system status display to display athird set of status data when the ventilation system is powered from anexternal source and a fourth set of status data different from the thirdset of status data when the ventilation system is powered from the oneor more batteries.
 8. The ventilation system of claim 1, wherein: atleast one command may be transmitted to the ventilation control systemvia the system status display when the primary display housing isremoved or turned off.
 9. The ventilation system of claim 1, wherein:status data is selected from ventilator status, primary display status,available gas sources, utilized gas source or sources, available powersources, utilized power source, pressure trace of inspiratory pressure,low pressure level (Peep), peak inspiratory pressure (P_(PEAK)), batterysystem status, batteries in use, battery charge level, and a batterystatus.
 10. The ventilation system of claim 1, wherein: the ventilationcontrol system causes the system status display to display a fifth setof status data when the ventilation system is powered from an externalsource and the primary display is turned off.
 11. The ventilation systemof claim 1, wherein: the system status display when in operation usesless than 10% of the power used by the primary display when inoperation.
 12. The ventilation system of claim 1, further comprising: aswitch that turns the system status display on and off.
 13. Aventilation system comprising: a main housing; a gas delivery system inthe main housing; a ventilation control system in the main housing thatcontrols the gas delivery system and monitors one or more of a patientphysiological parameter, operational parameters of the ventilationsystem and user-settable parameters; a primary display controller thatgenerates a graphical user interface and that receives user inputsthrough the graphical user interface and delivers commands to theventilation control system based on the inputs; a primary displayhousing removably attached to the main housing; a primary display in theprimary display housing that presents the graphical user interface; anda system status display incorporated into the main housing that receivesstatus data directly from the ventilation control system and displaysthe status data, wherein the primary display controller is in the mainhousing and is placed in a low-power mode when the primary displayhousing is removed.
 14. A ventilation system comprising: a main housing;a gas delivery system in the main housing; a ventilation control systemin the main housing that controls the gas delivery system and monitorsone or more of a patient physiological parameter, operational parametersof the ventilation system and user-settable parameters; a primarydisplay controller that generates a graphical user interface and thatreceives user inputs through the graphical user interface and deliverscommands to the ventilation control system based on the inputs; aprimary display housing removably attached to the main housing; aprimary display in the primary display housing that presents thegraphical user interface; and a system status display incorporated intothe main housing that receives status data directly from the ventilationcontrol system and displays the status data, wherein the primary displaycontroller is turned off when the primary display housing is removed.15. A ventilation system comprising: a main housing; a gas deliverysystem in the main housing; a ventilation control system in the mainhousing that controls the gas delivery system and monitors one or moreof a patient physiological parameter, operational parameters of theventilation system and user-settable parameters; a primary displaycontroller that generates a graphical user interface and that receivesuser inputs through the graphical user interface and delivers commandsto the ventilation control system based on the inputs; a primary displayhousing removably attached to the main housing; a primary display in theprimary display housing that presents the graphical user interface; anda system status display incorporated into the main housing that receivesstatus data directly from the ventilation control system and the systemstatus display displays first system status data when the ventilationsystem is ventilating a patient and receiving power from an externalpower source and the primary display is attached to the main housing andis displaying the graphical user interface; second system status datawhen the ventilation system is ventilating a patient and receiving powerfrom the external power source and the primary display is not attachedto the main housing or is not displaying the graphical user interface;third system status data when the ventilation system is ventilating apatient and receiving power from an internal power source and theprimary display is not attached to the main housing or is not displayingthe graphical user interface; fourth system status data when theventilation system is not ventilating a patient and is receiving powerfrom the external power source and the primary display is not attachedto the main housing or is not displaying the graphical user interface;and fifth system status data when the ventilation system is notventilating a patient and is receiving power from the internal powersource, wherein the fifth system status data are only displayed inresponse to a user command input via an interface element on the mainhousing, and wherein the first, second, third, fourth, and fifth systemstatus data are different.
 16. The ventilation system of claim 15,wherein the first system status data comprises utilized power source,primary display status, and at least one of: ventilator status,available gas sources, utilized gas source or sources, available powersources, pressure trace of inspiratory pressure, Positive End ExpiratoryPressure (PEEP), peak inspiratory pressure (P_(Peak)), battery systemstatus, batteries in use, battery charge level, and a battery status.17. The ventilation system of claim 15, wherein the second system statusdata comprises utilized power source, primary display status, and atleast one of: ventilator status, available gas sources, utilized gassource or sources, available power sources, pressure trace ofinspiratory pressure, Positive End Expiratory Pressure (PEEP), peakinspiratory pressure (P_(Peak)), battery system status, batteries inuse, battery charge level, and a battery status.
 18. The ventilationsystem of claim 15, wherein the third system status data comprisesutilized power source, primary display status, and at least one of:ventilator status, available gas sources, utilized gas source orsources, available power sources, pressure trace of inspiratorypressure, Positive End Expiratory Pressure (PEEP), peak inspiratorypressure (P_(Peak)), battery system status, batteries in use, batterycharge level, and a battery status.
 19. The ventilation system of claim15, wherein the fourth system status data comprises utilized powersource, primary display status, ventilation status, and at least one of:available gas sources, available power sources, utilized power source,battery system status, batteries in use, battery charge level, and abattery status.
 20. The ventilation system of claim 15, wherein thefifth system status data comprises utilized power source, primarydisplay status, ventilation status, and at least one of: available gassources, available power sources, battery system status, batteries inuse, battery charge level, and a battery status.